Table of Contents
Why are the membranes of a lot of cell organelles folded?
The folding of the inner membrane increases the surface area inside the organelle. Since many of the chemical reactions happen on the inner membrane, the increased surface area creates more space for reactions to occur. If you have more space to work, you can get more work done.
Why are folded membranes an advantage to the cell?
The folding increases the surface area where chemical reactions occur.
Why is inner membrane of mitochondria folded explain?
The inner membrane of Mitochondria is deeply folded to create a large surface area for chemical reactions of oxidative phosphorylation, i.e. the process of converting food sugars into energy (ATP) to take place.
What is the purpose of stacking and folding of membranes in the organelles of eukaryotes?
A mitochondrion has an outer membrane and a highly folded inner membrane. These folds of the inner membrane provide a greater surface area for the various chemical reactions to take place.
Why does the endoplasmic reticulum have so many folds?
Figure 11.3. 10. Protein folding is optimized in the ER. These chaperone proteins bind to the new proteins as they enter the lumen through the translocon and in addition to simply preventing incorrect bonds that would have to be broken, they also prevent premature interaction of multiple polypeptides with one another.
What is the advantage of folds on an organelle?
Section Assessment for 7.3
| Question | Answer |
|---|---|
| How are highly folded membranes an advantage for the functions of cellular parts? | high surface are to fit in a small space more happens in a cell |
| Name an organelle with highly folded membranes | mitochondria, golgi, ER |
What is the effect of increased folds in membrane compartment?
To increase the capacity of the mitochondrion to synthesize ATP, the inner membrane is folded to form cristae. These folds allow a much greater amount of electron transport chain enzymes and ATP synthase to be packed into the mitochondrion.
Are folded membranes found within plant chloroplasts?
Like mitochondria, chloroplasts are surrounded by two membranes. Chloroplasts also have a third internal membrane called the thylakoid membrane, which is extensively folded and appears as stacks of flattened disks in electron micrographs.
Why do plants move the chloroplasts around?
Chloroplasts migrate in response to different light intensities. Under weak light, chloroplasts gather at an illuminated area to maximize light absorption and photosynthesis rates (the accumulation response). In contrast, chloroplasts escape from strong light to avoid photodamage (the avoidance response).